Killing Floor on Steam Page has details on the return of the Killing Floor Summer Sideshow, which adds free content to Tripwire Interactive's co-op survival/horror FPS. This includes a new map, five new weapons, new enemy models, and more. Thanks BeyondUnreal.

xXBatmanXx wrote on Jul 8, 2012, 14:39:Reinstalled to try it out again. With friends this game is fun.

Fuck, why haven't I been playing this? Someone gifted it to me during the xmas sale. I played it for about 3 hours, but for some reason I haven't played since then. I decided fire it up again, and holy fuck I can't stop playing it. I've put 8 hours in it this weekend, and I'll probably play some more tonight. The weapons are the best, most realistic AND fun I've ever seen in any game.

Thats actually similar to what happened to me, tried it a bit when I got it, and went "eh". The tried it again a year later and enjoyed it and played it quite a bit.